1 files changed, 14 insertions, 0 deletions
diff --git a/src/tests/userprog/child-bad.c b/src/tests/userprog/child-bad.c
new file mode 100644
index 0000000..77d7a69
--- /dev/null
+++ b/src/tests/userprog/child-bad.c
@@ -0,0 +1,14 @@
+/* Child process run by wait-killed test.
+   Sets the stack pointer (%esp) to an invalid value and invokes
+   a system call, which should then terminate the process with a
+   -1 exit code. */
+
+#include "tests/lib.h"
+#include "tests/main.h"
+
+void
+test_main (void) 
+{
+  asm volatile ("movl $0x20101234, %esp; int $0x30");
+  fail ("should have exited with -1");
+}